Circuit Operation

CIRCUIT OPERATION
The horn system uses a single horn switch and horn relay. The horn switch is installed in the center of the steering wheel.

Circuit A7 from fuse 4 in the Power Distribution Center (PDC) feeds a junction block bus bar. The bus bar powers the coil side of the horn relay, and the contact side through fuse 21 in the junction block.

When the case grounded horn switch is depressed, circuit X3 provides ground for the coil side of the relay and the contacts CLOSE. When the contacts CLOSE, circuit X2 supplies voltage to the case grounded horns.